I am using Google Reader since I do not remember when. The new design implemented some time ago brought, I think, an inefficient use of the space. I believe that the new (and also current) top bar cover almost 20% of the page. For those who use Google Reader, this screen may look familiar:
The only thing that appeased my experience of reading in Google Reader was to use an external screen (I am using a wide-screen 15” laptop). That was until I found a GreaseMonkey script that modifies the layout of Google Reader. Below you can see how the top bar looks after using the GreaseMonkey script.